Hanover Insurance Group, Inc.
A property and casualty insurer selling auto, homeowners, and business coverage — from small-shop commercial policies to professional liability — through independent agents across dozens of states. Founded in 1852 as The Hanover Fire Insurance Company in Manhattan's Hanover Square (hence the name), it later moved its headquarters to Worcester, Massachusetts. A fun piece of history: it famously survived both the Great Chicago Fire of 1871 and the Great Boston Fire of 1872, disasters that put dozens of rival insurers out of business.
Estimated from filings — the split-adjusted price range over the quarters each manager built the position. A range, not a fill price; 13F reports a quarter-end snapshot, not a trade date.